ONK KM) OK T11K MACHLNK SHOP, SINUKU IH.'ILDIM, 



about 1 pound, or even atmospheric pressure, by 

 means of the pressure-reducing valve which is 

 mounted on the 6-inch connection. 



After the various heating mains were supplied 

 from it, the 20-inch exhaust main was fitted with a 

 back-pressure valve (to maintain the pressure in the 

 exhaust piping required for heating purposes) and 

 then extended from a point above engine No. 2 up 

 to the roof of the Bourne Building. Here it was run 

 over to the roof of the Bourne Building Addition to 

 k'et it as far away from the Tower as possible and 

 finally capped with a cast iron exhaust head. 



The engine room is equipped with a complete 

 -y-tem of overhead I-beam tracks and trolleys with 

 chain blocks, for handling valves or parts of the 

 engines and generators. It is cooled by air delivered 

 at numerous points along the ceiling through galvan- 

 ized iron ducts connected with electrically driven 



blowers located in the fan room, east of the switch 

 board. This air is previously filtered, washed and 

 tempered in. an elaborately constructed intake, 

 located over nigine No. 5. 



Like the engine room, the various elevator machin- 

 ery rooms throughout the building have been equipped 

 with overhead tracks, traveling cranes, trolleys, and 

 chain blocks for handling parts of their machinery 

 in case of a breakdown. Spare armatures mounted 

 on trucks, are conveniently stored for immediately 

 replacing any that may burn out, thus guarding against 

 protracted interruption! of the elevator service. 



East of the engine room, in the basement of the 

 old Singer Building, is now located the pump room, 

 repair shop and Chief Engineer's office. 



There is also an electrician's room and a waste- 

 paper room, containing a press, by means of which 

 all the waste paper, gathered up daily throughout 



82 ] 



